From ec610e8c5e193bfd3efccd61d2c875a3a2806849 Mon Sep 17 00:00:00 2001
From: kumar-sanchay <dsanchaykumar@gmail.com>
Date: Sat, 5 Jun 2021 14:42:49 +0530
Subject: [PATCH] New feature of easy api which creates crud apis for a model
 automatically

---
 rest_framework/models.py | 103 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 103 insertions(+)
 create mode 100644 rest_framework/models.py

diff --git a/rest_framework/models.py b/rest_framework/models.py
new file mode 100644
index 000000000..0ade21541
--- /dev/null
+++ b/rest_framework/models.py
@@ -0,0 +1,103 @@
+from django.core.exceptions import NON_FIELD_ERRORS
+from django.db import models
+from .views import APIView
+from .response import Response
+from . import serializers, status
+
+
+class EasyAPI(models.Model, APIView):
+    """
+    Inherite EasyAPI class and create models as you were creating.
+    You need to add a url with the class.
+    For example:
+
+    in models.py
+
+    class MyClass(EasyAPI):
+        field1 = models.CharField(max_length=100)
+
+    in urls.py
+    from .models import MyClass
+
+    urlpaterns = [
+        path('myurl/', MyClass.as_view())
+    ]
+    """
+    def get(self, request, *args, **kwargs):
+        
+
+        class EasyAPISerializer(serializers.ModelSerializer):
+            class Meta:
+                fields = '__all__'
+                model = self.__class__
+
+        self.child_model = self.__class__
+        
+        pk = None
+        if 'id' in request.query_params:
+            pk = request.query_params['id']
+
+        try:
+            queryset = self.__class__.objects.all() if pk is None else self.__class__.objects.get(pk=pk)
+        except self.__class__.DoesNotExist:
+            return Response({'msg': f'object with id={pk} does not exists'}, status=status.HTTP_404_NOT_FOUND)
+        if pk is None:
+            easyapi_serializer = EasyAPISerializer(queryset, many=True)
+        else:
+            easyapi_serializer = EasyAPISerializer(queryset)
+
+        return Response(easyapi_serializer.data)
+    
+    def post(self, request, *args, **kwargs):
+        
+        class EasyAPISerializer(serializers.ModelSerializer):
+            class Meta:
+                fields = '__all__'
+                model = self.__class__
+
+        easyapi_serializer = EasyAPISerializer(data=request.data)
+        easyapi_serializer.is_valid(raise_exception=True)
+        easyapi_serializer.save()
+
+        return Response(easyapi_serializer.data)
+    
+    def put(self, request, *args, **kwargs):
+        
+        pk = None
+        if 'id' not in request.query_params:
+            return Response({'msg': 'id parameter not present.'}, status=status.HTTP_400_BAD_REQUEST)
+
+        pk = request.query_params['id']
+
+        class EasyAPISerializer(serializers.ModelSerializer):
+            class Meta:
+                fields = '__all__'
+                model = self.__class__
+        try:
+            queryset =self.__class__.objects.get(pk=pk)
+            easy_serializer = EasyAPISerializer(queryset, data=request.data, partial=True)
+            easy_serializer.is_valid(raise_exception=True)
+            easy_serializer.save()
+
+            return Response(easy_serializer.data)
+        except self.__class__.DoesNotExist:
+            return Response({'msg': f'object with id={pk} does not exists'}, status=status.HTTP_404_NOT_FOUND)
+
+    def delete(self, request, *args, **kwargs):
+        
+        pk = None
+        if 'id' not in request.query_params:
+            return Response({'msg': 'id parameter not present.'}, status=status.HTTP_400_BAD_REQUEST)
+        
+        pk = request.query_params['id']
+
+        queryset =self.__class__.objects.filter(pk=pk)
+
+        if len(queryset)==0:
+            return Response({'msg': f'object with id={pk} does not exists'}, status=status.HTTP_404_NOT_FOUND)
+
+        queryset.delete()
+        return Response({'msg': 'Object deleted'})
+    
+    class Meta:
+        abstract = True